For the DCPCS on 737-300/400/500 and NG's, the Cabin Altitude Rate Limits are pin programmable. Many operators get the defaults: 600fpm in climb and 350fpm in descent, but 750fpm in climb and 500fpm or 750fpm in descent are available options. If your typical flight profiles result in occasionally flying through the cabin during descent, going to a higher descent rate limit may help.
Regarding the rate indicator, it is calibrated in "sea level feet per minute" because it is a very simple calibrated-leakage type gauge, pretty much unchanged for 40 years, that actually reacts to changes in pressure. A 200 ft. change in cabin altitude at sea level is a pressure change of about 7.3mBar, whilst the same 200 ft. change from an 8000 ft. cabin in cruise is only about 5.8mBar of pressure change. Looking at it another way, a 7.3mBar pressure change is 200 ft. at sea level, but corresponds to about 253 ft. change from an 8000 ft. cabin altitude. That is why the rate indicator shows a higher rate at higher cabin altitudes.
We can forego any Airbus vs Boeing issues here because the 737 DCPCS is made by the same company that provides cabin pressure control systems for all the Airbus models.